Die-stock oiler.



C. H. & W. C. BUHMANN & E. E. IVERSEN.

DIE STOCK OILER.

APPLICATION FILED MAY 4. 1914.

Patented Aug. 17, 1915.

2 SHEETS-SHEET 1- c. H. & w. '0. BUHMANN & E. E. IVERSE NJ DIE STOCK OILER.

APPLICATION FILED MAY 4, 1914.

1,1 50,660. Patented Aug. 17', 1915.

2 SHEETSSHEET 2.

an en ree manna canton.

oiannns i-iLBuHMANNaor MaYw-oonann W1LLIAM- o. BUHMANN AND nannsr E.

' rvnnsnnon GHIGAGO, ILLINOIS.

nin-s'roox o nnit.

BUHMANiv, (2)WILLIAM: G. BUI-IMANN, and

(3) EnNnsr EL IvnRsEN, citizens of the United States, residing at (1) Maywood and (2 and 3) Chicago, rwpeotwely, 1n. the

county of Cook and State of Illinois, have invented certain new and useful Improvements in Die-Stock Oilers, of which the following is a specification.

This invention relates to new and useful improvements in die-stocks and more particularly to means for oiling a die which consists of hollow diestock oi-lers constituting reservoirs for oil anda'novel valve for each handle which maybe readily controlled by the operator to regulate theoil feed.

An object of importance is to provide means for conveniently and easily oiling.

stocks that may be readily attached to various styles of diestocks without necessitating any material change in theconstruction thereof. 1

Another object is to provide a novel valve for eachhandle to control the oil'feed and which is operable by a push button at the end of each handle and automatically closes.

upon release of pressure upon the push button. r

Another important object is to provide a die stock oiler of the character described that is simple as to construction, reliable and eflicient in operation and inexpensive to manufacture.

These and other objects may be attained by the structure illustrated in the accompanying drawings in which,

Figure 1 is a top plan view of a die stock showing our improved oiling means attached, Fig. 2 is a longitudinal sectional view D showing the device in assembled position,

. Fig. 3 is a transverse sectional view taken on line 3-3 of Fig. 2, Fig. 1 is a detail perspective view of the die block, Fig. 5 is a detail sectional view of the valve casing, and Fig. 6 is a detail view of the valve.

Referring to the drawings forming a part of this specification and inwhich like numorals designate corresponding parts, the numeral 1 designates the body of a die stock having a die block receiving opening 2 of any suitable character formed therein. On each side of the body is formed an internally threaded socket 3. The sockets 3 receive the externally threaded ends of hollow handles Specification of Letters Patent.

Application filed May 4; 1914. Serial 0. 836,236.

Patented Aug. 1?, 1915..

1 which act as reservoirs as will be later more fully described. Openings 5 extend from the inner ends or; the sockets through the body 1 andcommunicate with the die block receiving opening 2. Feed tubes 6 are mounted within the openings 5 and coinmunicate at their ends with the hollow handle 4 and the receiving opening 2 respectively. The inner ends of the tubes 6 project into the die opening 2 and rest within grooves 7 formed on opposite sides of the openlng in a die blookS.

The die blocks is clamped in the usual manner in the diereceiving opening 2 of the die stock and is oiled in a reliable and efficient manner by-the tubes 6 which at their inner ends rest as described within the grooves 7. The grooves 7 convey the oil to the cutting face of the die and act as a guide for the oil.

Mounted within the inner ends of the hollow handles 41 are cylindrical valve casings 13 provided intermediate their ends with conical valve seats 11 and having the openings therein enlarged to one side of the valve seat to provide pockets 15. The inner ends of the valve casings 13' are slightly enlarged and internally screw threaded as at 16 to receive plugs 17 that are removably mounted within the portions 16 and have central apertures in which are mounted the outer ends of the tubes 6. The casings 13 serve to; sealthe inner. ends of the hollow handles 4. Mounted within each of the valve casings 13 is a slidable valve 18 that is provided with a frusto conical end face 19 20 communicating with the face 19. The

frusto conical face 19 of each valve is de-' signed to cooperate with the valve seat 14 in each casing. The valve 18 is provided at its inner end with a circular recess 21 and at the other end with in internally screw threaded opening 22. The inner end of the valve stem 23 is turned within the screw threaded opening 22 of each of the valves 18 while the other end of each valve rod is disposed adjacent the outer end of each handle interiorly thereof. Mounted on the outer ends of the hollow handles 4 are oylindrical sleeves 24 that are internally threaded on one end and provided at their other ends with inwardly extending annular flanges 25. These flanges 25 are designed to rest upon the outer ends of the handles 4.

A push button 26 is mounted within each of the sleeves 24: and provided with an annular flange 27 at its inner end. The flanges 27 engage the inner edges of the flanges 25,-

' of the Sleeves 2 1.

Each of the push buttons is provided at its inner end with an inwardly extending recess 28 in which is mounted the outer end of each valve rod 23. The outer ends of the valve rods 23 are spaced from the push buttons so as to allow the push buttons to'be'f vmoved inwardly a'slight distance prior to their engagement with the. ends of the valve rods, so that an accidental inward movement of the push button 26. would not unseat the valves 18. A collar 29 is formed adjacent the outer end of each valve rod 23 and engages one end of a helical expansive spring 30. The helical expansive springs 30 are mounted within the recesses 28 and serve to hold the push buttons normally spaced from the outer ends of the valve rods. Mounted within the recesses 21 in thevalves 18 are expansive springs 31 that are similar,

to the ones-30and at their outerends engage theplugs 17 The springs 31 serve to hold the valves 18 normally in closed position.

In operation the handles 4 are'filled with oil preferably by removing the cylindrical sleeves 24 and push buttons cooperating therewith. When it is desired to oil the die the operator forces the push buttons 26 inwardly until they engage the outer ends of the valve rods 23 and move the valves out of registration with the seats. The oil is al-v lowed to flow in the casings through the outer open ends through the grooves 29 in" the valves 18 into thepockets15 in the cas ings and from thence through the tubes 6 to the grooves7 in the die block. By operatingboth handles the die will be oiled in an efficient manner upon opposite sides thereof. Upon the removal of the pressure from the push buttons the springs 31 serve;

to automatically force the valves into closed position. The spacing of the ends of the valve rods from the push buttons insures a O'opies of this patent may be obtained for five cents each, by addressing the Commissioner ofPatents.

reliable ivalve closing-action as friction is eliminated; The-push buttons are held normally "in"inoperative position by the spriiigsBO. I

With reference to the "foregoing description and accompanying drawings it will be readily seen that there has been provided simple andinexpensive means to easily and reliably lubricate die stock that may be easily operated when the the die In practice, it has been found that the form of this invention, illustrated in the drawings and referred tom the above description, as the preferredrembodiment, "is the mosteflicient and practical; yet realize ing that the conditions concurrent with the adoption of this device will necessarily vary, it is desired to emphasize the fact that various minor changes in details of construction, proportion and arrangement of parts may be resorted to, when required,without sacrificing any of the advantages of this invention,-as set forth' in the claim.

hat-is claimedis.:- g The combination with a die operator'is using stock having a hollow handle constitutingan oil jres'ervoir, a push button slidably mounted with" in the outer endof the" handle and having a;

recessopening out through the inner side. thereof, a valve caslng securedw1th1nthe},

inner end of the handle, a valve. mounted in the casing, a spring normally-retaining" the valve seated,' a'rod securedjat 112311111331 'end' to the valve andfhaving 1135011138! end I tween and engagingthe collarfandLthe end wall of said recess.

In testimony whereof we afiix our 'signa tures in presence of two witnesses.

WILLIAM C. BUHMANN.

Vlfitnesses:

V FRED M. LAUmaNoE, l/VIL AM: J. Torrens.

' Washington, 1). 0.

CHARLES H. BUHMANNJ I 'nnnnsr IVEBSENr. i 

